Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
time last » time list, time past, time lost
thin zeng » thin end, thin lens
zeng doug » jeng dong, zeng douglas
wei yang » pei yang, wei wang, wei yang's
time pad » time part, time pcr
sind » find, wind, kind

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: wei yang yang ((time last) OR (time pad)) thin zeng doug sind ;~.
• Adding a wildcard symbol may retrieve word variants: wei yang yang ((time last) or (time pad)) thin zeng doug sind ;*.